macports-ports/math/mathmod/files/patch-drawingoptions.cpp.diff

--- ui_modules/drawingoptions.cpp.orig	2018-12-19 02:50:32.000000000 +0800
+++ ui_modules/drawingoptions.cpp	2024-07-03 05:23:01.000000000 +0800
@@ -20,6 +20,7 @@
 
 #include "drawingoptions.h"
 #include <qmessagebox.h>
+#include <QJsonParseError.h>
 
 static int indexcurrentFormula=-1;
 static int indexcurrentSet=0;